Home / 86,007.22-129,027.08-38,621.21

Finding the Fourth Proportional to 86,007.22, 129,027.08 and 38,621.21

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Solution

The fourth proportional to 86,007.22, 129,027.08 and 38,621.21 is: 57,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,007.22 : 129,027.08 = 38,621.21 : x
  2. Step 2: Convert to fraction form
    86,007.22/129,027.08 = 38,621.21/x
  3. Step 3: Cross multiply
    86,007.22x = 129,027.08 × 38,621.21
  4. Step 4: Simplify right side
    86,007.22x = 4,983,181,186.54
  5. Step 5: Solve for x
    x = 4,983,181,186.54/86,007.22
  6. Step 6: Final answer
    x = 57,939.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.